iTRAQ Based Serum Proteomic Analysis Reveals Multifactorial Cellular Function Impairment and Aggravated Systematic Inflammation in Drug free Obsessive Compulsive Disorders ACS Chemical Neuroscience Lower Posterior Cingulate Cortex Glutathione Levels in Obsessive Compulsive Disorder Frontiers The effect of major depressive disorder comorbidity on ischemia modified albumin levels, a marker of oxidative stress, and antioxidant defense system in patients with obsessive compulsive disorder Frontiers The safety and efficacy of N acetylcysteine as an augmentation in the treatment of obsessive compulsive disorder in adults: a systematic review and meta analysis of randomized clinical trials